fix(docker): remove libredwg (not in Alpine repos), DWG→DXF gracefully disabled

Dockerfile

@@ -29,9 +29,10 @@ WORKDIR /app
 
 ENV NODE_ENV=production
 
-# GDAL/ogr2ogr for GeoPackage export, libredwg for DWG→DXF,
+# GDAL/ogr2ogr for GeoPackage export,
 # ghostscript+qpdf for extreme PDF compression (direct, not via Stirling)
-RUN apk add --no-cache gdal gdal-tools libredwg ghostscript qpdf
+# Note: libredwg not available in Alpine repos — DWG→DXF disabled in Docker
+RUN apk add --no-cache gdal gdal-tools ghostscript qpdf
 
 RUN addgroup --system --gid 1001 nodejs
 RUN adduser --system --uid 1001 nextjs